Speakman, Caldwell and Co.
Owners of Gerards Bridge Colliery, St Helens, from the late 1830s through the explosion of 1847.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Gerards Bridge Colliery | Merseyside | ?–? |
Record created: 4 October 2026 · Last researched: 4 October 2026